GRound Hawg tires,,,need some in fo on them

Got a 68 M-715, buliding from ground up. putting in a 69 dz 302 with a 350 crank( made in to 350 parts are alot cheaper)running around 350 hp/ 350 tourge,5.89 gears, and a np 465 and the stock np 200 t-case.I drive the truck as a daily driver/week end hero, lots of fire roads, a little sand, some mud, not to deep but deep enough to havebarried the truck to the frame before.Hers what i want to know Has any one ran a set of 38x15.50x16.5 ground hawgs on a truck weighing close to 8 grand?If so how did they hold up, what kind of millage did you get out of them, and do the punture easy,baja has lots of yucca plants and catausin the summer.plan to run them on a set of 16.5x12 steal rims.Ran a set of super swaper tsl`s bias, got about 20,000 miles out of them they were tuff, and got the truck out of most every thing, but millage sucked.

any way thanks for the help in adavanceChrisfell free to emailM_715@yahoo.com